Poor Man’s Still

In a few files on this system some of the recipes need a still, well here is how to make a still: Once you get the chemicals, ingredients, or whatever, you set up your still. It is small, efficient, and safe. In it you can make things like tear gas, prussic acid and occasionally distil … Read more

Supplemental Midge Instructions

This is a supplemental MIDGE building instruction, which includes some small modest modifications that I have made to Chris’s original elegant design. Note, that I have not include information on the sizes or numbers of the various holes that need to be made in the cans. Those can be found in Chris’s original MIDGE instructions … Read more

Notes on Flat Proofing Tires

Pre-formed flat proof tires, and tire-wheel assembles: American Tire Corporation provides Urethane flat proof tires and/or tire-wheel assembles. The Urethane tires would work on a variety of sizes to include bicycles and steel wheels. Low density foam push carts Urethane tires ride like a 15 psi pneumatic tire and cost about $4/each up to 26×1.95. … Read more


Footwear refers to garments worn on the feet, which originally serves to purpose of protection against adversities of the environment, usually regarding ground textures and temperature. Footwear in the manner of shoes therefore primarily serves the purpose to ease the locomotion and prevent injuries. Secondly footwear can also be used for fashion and adornment as … Read more

What is Tanning Leather?

Tanning is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed. Tanning hide into leather involves a process which permanently alters the protein structure of skin, making it more durable and less susceptible to decomposition, and also possibly coloring it.Before tanning, the … Read more


High-efficiency particulate arrestance (HEPA), also sometimes called high-efficiency particulate arresting or high-efficiency particulate air, is a type of air filter. Filters meeting the HEPA standard have many applications, including use in medical facilities, automobiles, aircraft and homes. The filter must satisfy certain standards of efficiency such as those set by the United States Department of … Read more

Cyclonic Separation

Cyclonic separation is a method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation. When removing particulate matter from liquids, a hydrocyclone is used; while from gas, a gas cyclone is used. Rotational effects and gravity are used to separate mixtures of solids and fluids. The … Read more

Air Purifier

An air purifier is a device which removes contaminants from the air in a room. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke. The commercially graded air purifiers are manufactured as either small stand-alone units or larger units that can be affixed … Read more